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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

iac bleeder screw...?

   
Old 10-06-2008, 04:44 PM
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iac bleeder screw...?
what is this used for?
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Old 10-06-2008, 06:28 PM
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There is no IAC bleeder screw on a stock LT1, and I'm not aware of any aftermarket LT1 throttle bodies that include them. They are used on some aftermarket LS1 throttle bodies, to allow you to tweek the base idle air flow for engines that require more idle air than the IAC circuit can provide.
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Old 10-07-2008, 11:27 PM
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ok thanks.

what does this screw go to/ do??



Last edited by Austin_78@msn.com; 10-07-2008 at 11:30 PM.
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Old 10-07-2008, 11:44 PM
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Can't see pics
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Old 10-08-2008, 09:36 PM
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sorry...here is the links

its the gold bleeder screw.

http://by116w.bay116.mail.live.com/a...AF715B8635EF0|

http://by116w.bay116.mail.live.com/a...AF715B8635EF0|
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Old 10-09-2008, 05:29 AM
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Links lead to "Windows Live"????
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Old 10-09-2008, 11:47 AM
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here try these..

http://s89.photobucket.com/albums/k2...ictures013.jpg

http://s89.photobucket.com/albums/k2...ictures014.jpg
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Old 10-09-2008, 05:18 PM
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That is an air bleeder for coolant system, it pumps coolant through the TB to keep it from icing up in cold weather.

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Old 10-09-2008, 06:40 PM
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Whatever it is, its not stock for the F-Body LT1 throttle body. First time I've ever seen it. And its not the stock coolant bleeder screws. They are not on the throttle body.
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Old 10-09-2008, 07:56 PM
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That is completely pointless. The coolant line running into the TB is a return line into the radiator.
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Old 10-09-2008, 08:49 PM
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It is a 93 only type of thing. I think I remember having the same on my 93.

Here is a picture from Shoebox's site:

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